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arXiv · 0806.2247

On the Dalitz plot analysis of the B --> K eta gamma decays

Svjetlana Fajfer·Tri-Nang Pham·Nejc Košnik
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Abstract

Recently B-factories have published new results on the $B \to K ηγ$ decays being inspired by the theoretical suggestion to search for new physics in $B \to P_1 P_2 γ$ decays. Using heavy meson chiral perturbation theory we find mechanism which governs the amplitude in parts of the Dalitz plot where either $K$ or $η$ mesons are soft. The dominant contributions in these cases are coming from the nonresonant decay modes. We discuss also $B \to K η' γ$ Dalitz plot. Our partially integrated rates are in agreement with the experimental findings.

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Svjetlana Fajfer, Tri-Nang Pham, Nejc Košnik. 2008-07-01. On the Dalitz plot analysis of the B --> K eta gamma decays. https://doi.org/10.1103/physrevd.78.074013

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